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Science Atoms and Elements , Diffusion

Total questions: 223

Worksheet time: 2hrs 26mins

Name
Class
Date
1.

A positively charged particle found in the nucleus of an atom is

a)

a quark.

b)

an electron.

c)

a proton.

d)

a neutron.

2.

A  negatively charged particle located outside the atom's nucleus is

a)

a neutron.

b)

a proton.

c)

an electron.

d)

a quark.

3.

A subatomic particle that has no charge and that is found in the nucleus of an atom is

a)

a quark.

b)

a proton.

c)

a neutron.

d)

an electron.

4.

The center of an atom is 

a)

a neutron.

b)

a nucleus.

c)

a quark.

d)

a bohr.

5.
What is matter composed of?
a)
Cells
b)
Atoms
6.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
7.
The positive particles of an atom are 
a)
Electrons 
b)
Positrons 
c)
Neutrons 
d)
Protons 
8.
The central region of an atom where its neutrons and protons are is its _______.
a)
Nucleus 
b)
Electron cloud
c)
Core 
d)
Center 
9.
An atom with atomic number 6 would have how many protons?
a)
6
b)
12
c)
3
d)
Cannot be determined 
10.
Particles in an atom that are neutral and have no charge are ______. 
a)
Negatrons 
b)
Electrons 
c)
Neutrons 
d)
Protons 
11.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
12.
The particles that are found in the nucleus of an atom are _____.
a)
Neutrons and electrons
b)
Electrons only
c)
Protons and neutrons
d)
Protons and electrons
13.
Most of the mass in an atom is concentrated in the _____.
a)
Electrons
b)
Nucleus
c)
Protons
d)
Empty space
14.
What are the 3 particles that make-up the atom?
a)
Protons, neutrons, and isotopes
b)
Neutrons, isotopes, and electrons
c)
Positives, negatives, and electrons
d)
Protons, neutrons, and electrons
15.

Each chemical element is made up of only one kind of

a)

atom

b)

molecule

c)

electron

d)

neutron

16.

Chemist use letters of the alphabet as _________ for the elements.

a)

pictures

b)

colors

c)

symbols

17.

What is the atomic number of this element?

a)

O

b)

8

c)

16

18.

How many protons does this element have?

a)

16

b)

8

c)

0

19.

What is the atomic mass of this element?

a)

13

b)

26.982

c)

Al

20.

How many electrons does this element have?

a)

13

b)

27

c)

Al

21.
What are the states of matter?
a)
Solid, Liquid, Water
b)
Solid, Liquid, Gas
c)
Melting, Freezing, Condensing, Evaporating
d)
Water and Liquid
22.
What is a molecule?
a)
Two or more atoms bonded together
b)
One element
c)
One atom
d)
Solid, Liquid, Gas
23.
What does this image represent?
a)
Atom
b)
Element
c)
Molecule
d)
Marshmallows
24.
What is main reason for phase changing of states of matter?
a)
Color
b)
Elements
c)
Temperature
d)
Water
25.
What do we call a substance consisting of a single atom?
a)
coefficient
b)
element
c)
compound
d)
molecule
26.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
27.
All ____________ are made up of two or more atoms bonded together.
a)
atoms
b)
molecules
c)
electrons
d)
elements
28.
Bonds between atoms in a molecule form as a result of the sharing  of?
a)
formulas
b)
electrons
c)
atoms
d)
chemicals
29.
A recipe for a chemical substance is called a ________ _________.
a)
coefficent
b)
chemical formula
c)
Oxygen
d)
atom
30.
The Atomic Number is the same as the number of:
a)
protons
b)
electrons
c)
protons and neutrons
d)
electron shells
31.
A subatomic particle that orbits an atom's nucleus, has a negative charge, and has very little mass
a)
Proton
b)
Neutron
c)
Electron
d)
Isotope
32.

This forms when two or more different elements chemically combine.

a)

monoatomic elements

b)

elemental element

c)

compound

33.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
34.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
35.

How many hydrogen atoms are there in a water molecule? H2O

a)

0

b)

1

c)

2

d)

3

36.
What is at the center of every atom?
a)
a nucleus
b)
an electron
c)
a compound
d)
a molecule
37.
Which two particles make up the nucleus of an atom?
a)
protons and neutrons
b)
protons and electrons
c)
molecules and compounds
d)
neutrons and electrons
38.
What is the role of an electron in an atom?
a)
Electrons circle the nucleus and have a negative charge.
b)
Electrons live inside the nucleus and carry a neutral charge.
c)
Electrons circle the nucleus and have a positive charge.
d)
Electrons live inside the nucleus and have a negative charge.
39.
In an atom, what is the number of protons usually equal to?
a)
the number of electrons
b)
the number of neutrons
c)
the number of molecules
d)
the number of nuclei
40.
Which of the following determines the type of element that an atom makes?
a)
the number of protons
b)
the size of the nucleus
c)
how much the atom weighs
d)
the number of neutrons
41.
What forms when two atoms combine?
a)
a molecule
b)
a nucleus
c)
a proton
d)
an electron
42.
What is a compound?
a)
a molecule that is formed from two or more different types of atoms
b)
a tiny particle that makes up all matter
c)
the center of an atom that is formed by neutrons, protons, and electrons
d)
a molecules that is formed from the same type of atoms
43.
What is the significance of the periodic table of elements?
a)
It predicts and lists all the chemical elements in the universe
b)
It lists all the different metals known to humans
c)
It explains where different atoms can be found
d)
It proves that atoms are the building blocks of matter
44.
What do electrons in the same shell have in common?
a)
They have the same amount of energy
b)
They are all made up of atoms
c)
They are all positively charged
d)
They all have neutral charges
45.
Which of the following is an example of a subatomic particle?
a)
Electron
b)
Carbon
c)
Oxygen
d)
Hydrogen
46.
What might happen if the strong force didn't exist?
a)
Atomic nuclei would fly apart
b)
Electrons would have positive charges
c)
It would be more difficult to split atoms
d)
Neutrons would not exist
47.
What two types of particles exist within an atomic nucleus?
a)
Protons and neutrons
b)
Neutrons and electrons
c)
Protons and neutrinos
d)
Positrons and neutrons
48.
Oxygen has an atomic number of 8. What can you conclude from this fact?
a)
An atom of oxygen has 8 protons.
b)
An atom of oxygen weighs 8 grams.
c)
An atom of oxygen has 4 protons and 4 electrons.
d)
An atom of oxygen has 8 positrons.
49.
The word "atom" comes from a Greek word for "indivisible." In what way are atoms indivisible?
a)
They cannot be broken apart without losing their chemical properties
b)
They cannot be separated once they've bonded with other atoms
c)
They cannot form bonds with other atoms
d)
They cannot gain or lose electrons
50.
How are molecules different from atoms?
a)
They consist of several atoms bonded together.
b)
They do not contain neutrons.
c)
They do not have nuclei.
d)
Their particles do not have electrical charges.
51.
What can you conclude from the fact that electrons orbit far away from atomic nuclei?
a)
Atoms are comprised mostly of empty space
b)
Electrons are extremely small
c)
Protons have a positive charge
d)
Atoms consist of subatomic particles
52.
All matter is made up of tiny particles that are too small to be seen directly through an optical microscope. These tiny particles are known as _______.
a)
atoms
b)
cells
c)
forces
d)
gases
53.
Atoms have mass and take up space. This is because atoms are a type of _______.
a)
matter
b)
physical property
c)
energy
d)
living organism
54.
George is studying a substance that is made out of only one element. This means that
a)
all the atoms in the substance are similar to each other.
b)
the substance does not have any energy.
c)
there are many different types of atoms in the substance.
d)
the substance is too small to be seen with the human eye.
55.
Hydrogen is a pure substance represented by the chemical symbol H. Which of the following best describes hydrogen?
a)
Hydrogen is an element made of only one kind of atom.
b)
Hydrogen is an element made of two or more kinds of atoms.
c)
Hydrogen is a compound made of two or more kinds of atoms.
d)
Hydrogen is a compound made of only one kind of atom.
56.
Silver is an element. Which of these does the classification "element" suggest about silver?
a)
The atoms of silver are all alike.
b)
The atoms of silver are different sizes.
c)
The atoms of silver are each unique.
d)
The atoms of silver are a gas.
57.
Since air is a type of matter, air must be made out of tiny particles that are called _______.
a)
atoms
b)
grains
c)
pebbles
d)
spots
58.
The element oxygen, represented by the symbol O, is classified as
a)
a pure substance.
b)
a solution.
c)
a mixture.
d)
a compound.
59.
The smallest part of any material is the _______.
a)
atom
b)
fragment
c)
molecule
d)
mineral
60.
What does all matter have in common?
a)
It is made up of atoms.
b)
It is made up of molecules.
c)
It is all solid.
d)
It is too small to see.
61.
What is all matter made up of?
a)
atoms
b)
carbon
c)
metal
d)
cells
62.
What is an element?
a)
a substance made of just one kind of atom that cannot be broken down into something simpler
b)
a substance made up of hydrogen and one other kind of atom
c)
a substance made of just one kind of molecule that cannot be broken down into something simpler
d)
a material that is shiny and usually hard and strong
63.
What is the most general name for any single type of matter that is made from a specific arrangement of atoms?
a)
substance
b)
molecule
c)
solid
d)
element
64.
What is the name for the tiny particles that metal is made out of?
a)
atoms
b)
cells
c)
cubes
d)
stars
65.
What is the smallest particle of an element that still has the same chemical properties?
a)
atom
b)
mixture
c)
molecule
d)
compound
66.
What makes the element named iron (Fe) different from the element named nickel (Ni)?
a)
Atoms of iron are different from atoms of nickel.
b)
Iron is made of atoms but nickel is not.
c)
Iron is a solid but nickel is a gas.
d)
The only difference is the name of the element.
67.
Which is a substance made up of only one kind of atom?
a)
an element
b)
a solution
c)
a mixture
d)
a compound
68.
Which of the following best describes what the 118 known chemical elements combine to form?
a)
all the matter in the Universe
b)
all the cells of living organisms only
c)
all of the heat and light from the Sun
d)
all of the energy on Earth
69.
Which part of a material is too small to be seen without being magnified greatly?
a)
an atom
b)
a granule
c)
a bit
d)
a pebble
70.

What is the heavy center of an atom called?

a)

proton

b)

nucleus

c)

electron

d)

neutron

71.

Anything with mass and takes up space is called __.

a)

stuff

b)

matter

c)

element

72.

Atoms are the building blocks of all __.

a)

matter

b)

nothing

c)

atoms

d)

buildings

73.

The smallest piece of an element:

a)

quark

b)

electron

c)

shell

d)

atom

74.

The cloud-like space that electrons travel around:

a)

nucleus

b)

shell

c)

neutrons

d)

Oort cloud

75.

Protons and neutrons are found in the center of the atom called the:

a)

nucleus

b)

neutron

c)

shell

d)

cell

76.

Classification system for elements is called:

a)

Elements

b)

Periods

c)

The Periodic Table of Elements

d)

Families

77.

The subatomic particles are called:

a)

protons, nucleus and electrons

b)

protons, electrons and neutrons

c)

protons, positives and negatives

d)

cloud, shell and quarks

78.

Substances that have only one kind of atom are called:

a)

elements

b)

nitrogen

c)

electrons

d)

nucleus

79.

Electrons have a _____ charge.

a)

neutral

b)

negative

c)

positive

d)

both positive and negative

80.

What is the study of matter?

a)

Chemistry

b)

Biology

c)

Earth Science

d)

Physics

81.

_____ is what scientists think atoms are like.

a)

Chemistry

b)

The box

c)

The atomic structure

d)

The atomic theory

82.

The abbreviation for an element:

a)

element name

b)

atomic number

c)

chemical symbol

d)

atomic symbol

83.

Who invented the simplified version of the atom?

a)

Dmitri Mendeleev

b)

Niels Bohr

c)

Sir Isaac Newton

d)

Albert Einstein

84.

The scientist who invented the classification system for the elements:

a)

Dimitri Mendeleev

b)

Niels Bohr

c)

Sir Isaac Newton

d)

Albert Einstein

85.

What is the sum of an atom's protons and neutrons called?

a)

atom

b)

atomic theory

c)

atomic mass

d)

atomic number

86.

The columns on the periodic table that are color coded and describe the number of electrons in the outer shell of the atomic structure of the element:

a)

families

b)

groups

c)

periods

87.

The rows or periods on the periodic table describe:

a)

the same number of outer electrons

b)

the same number of shells

c)

the same number of protons

d)

the same mass

88.

The _____ is based on the number of protons in the nucleus of the atom.

a)

atomic structure

b)

periodic table of the elements

c)

atomic number

d)

atomic mass

89.

What subatomic particle is represented by this symbol (+):

a)

neutron

b)

proton

c)

electron

90.

What subatomic particle is represented by this charge (-):

a)

neutron

b)

proton

c)

electron

91.

Why do the electrons surround the nucleus?

a)

the negative electrons are attracted to the neutral neutrons

b)

the negative electrons are repelled by the neutral neutrons

c)

the negative electrons are attracted to the positive protons

d)

the negative electrons are repelled by the positive protons

92.

All matter is made of _____.

a)

light

b)

energy

c)

cells

d)

atoms

93.

What is "C" labeling?

a)

electrons

b)

neutrons

c)

nucleus

94.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
95.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
96.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
97.
Which letter represents the electron cloud?
a)
A
b)
B
c)
D
d)
E
98.
Using your Periodic Table, identify the element that is represented by this model. 
a)
Beryllium
b)
Oxygen
c)
Fluorine
d)
Boron
99.
How many electrons are in the atom pictured? 
a)
1
b)
2
c)
3
d)
0
100.
The atomic number of this pictured element is
a)
28
b)
58.6934
c)
Ni
d)
Nickel
101.
How many electrons does a Hydrogen atom have?
a)
1
b)
2
c)
3
d)
0
102.

All matter is made up of tiny particles called?

a)

atoms

b)

elements

c)

protons

d)

neutrons

103.

Atoms are made up of which of the following?

a)

protons

b)

neutrons

c)

electrons

d)

all the above

104.

True or False: Atoms are big.

a)

True

b)

False

105.

An element is determined by the number of _______ in its nucleus (also known as the atomic number).

a)

neutrons

b)

electrons

c)

protons

d)

glutons

106.

Chemists use letters of the alphabet as __________ for the elements.

a)

numbers

b)

symbols

c)

pictures

d)

none of the above

107.

The number of protons determines the ______ of an atom.

a)

state

b)

element

c)

time

d)

weight

108.

Electrons are ______ charged.

a)

postive

b)

neutral

c)

negative

d)

none of the above

109.

Neutral particles have a NO charge: True or False?

a)

True

b)

False

110.

Protons are positively charged: True or False?

a)

False

b)

True

111.

A _________ is a particle with no charge.

a)

postive

b)

proton

c)

neutron

d)

electron

112.

Jordon and Kara are working on a chemistry project about elements. They find the number 1.00794 in their research. What does this number represent in their chemistry project?

a)

Hydrogen

b)

atomic number

c)

atomic mass

d)

atomic explosion

113.

Chelsey and Sam were baking a cake and came across a recipe that required an ingredient with a specific number of protons. Can you help them determine the number of protons that this element contains?

a)

14

b)

7

c)

21

d)

None of the above

114.

Robin and Dave are studying for their upcoming science test. They come across a question about atoms. Where would they find most of the mass in an atom?

a)

In the protons and electrons

b)

In the protons and neutrons

c)

In the neutrons and electrons

d)

In the electrons and quarks

115.

Joan and Scott are young scientists exploring their backyard. They discover that everything they see, touch, and feel, such as the grass, the soil, and the insects, is made of _____

a)

energy. 

b)

atoms. 

c)

electrons. 

d)

compounds. 

116.

Danny and Joe are working on a science project about the structure of atoms. They are discussing the particles that make up an atom and wonder which of the following particles are even smaller than an atom itself?

a)

proton

b)

neutron

c)

electron

d)

all of the above

117.

What is the chemical symbol for the element hydrogen

a)

H

b)

He

c)

h

d)

he

118.

What is the chemical symbol for the element Carbon

a)

ca

b)

co2

c)

C

d)

Cd

119.

What is the chemical symbol for the element Nitrogen

a)

Ni

b)

N

c)

No

d)

Nb

120.

The atomic number tells you what?

a)

number of electrons

b)

number of protons

c)

number of neutrons

d)

protons in an atom

121.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
122.
A proton is....
a)
A negatively charged subatomic particle
b)
A positively charged subatomic particle
c)
A neutrally charged subatomic particle
d)
The only subatomic particle located in the nucleus
123.
The smallest particle of any particular type of matter is known by which of the following terms?
a)
Compound
b)
Atom
c)
Chemical
d)
Element
124.
The subatomic particle with a negative charge is the
a)
electron
b)
proton
c)
neutron
d)
nucleus 
125.

What is the atomic mass of this element?

a)

13

b)

26.982

c)

Al

126.

How many electrons does this element have?

a)

13

b)

27

c)

Al

127.

What part of the atom is the arrow pointing to?

a)

Proton

b)

Neutron

c)

Electron

128.

What part of the atom is the arrow pointing to?

a)

Proton

b)

Neutron

c)

Electron

129.

What part of the atom is the arrow pointing to?

a)

Proton

b)

Neutron

c)

Electron

130.

An element is determined by the number of ________ in its nucleus (also known as its atomic number).

a)

neutrons

b)

electrons

c)

protons

131.

Each chemical element is made up of only one kind of

a)

atom

b)

molecule

c)

electron

d)

neutron

132.

Chemist use letters of the alphabet as _________ for the elements.

a)

pictures

b)

colors

c)

symbols

133.

What is the atomic number of this element?

a)

O

b)

8

c)

16

134.

A ________ is a particle with no charge.

a)

proton

b)

neutron

c)

electron

135.

How many protons does this element have?

a)

16

b)

8

c)

0

136.

are the basic building blocks of matter because they are the smallest particles that can have the same properties as the stuff they make up.

a)

cells

b)

periodic table

c)

atom

d)

electrom

137.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
138.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
139.

How many electrons does Fluorine have?

a)
9
b)
18
c)
17
d)
19
140.

How many protons does Fluorine have?

a)
9
b)
18
c)
17
d)
19
141.

How many neutrons does Fluorine have?

a)
9
b)
18
c)

10

d)
19
142.
How many protons are in an atom of carbon?
a)
12.01
b)
8
c)
6
d)
14
143.

How many electrons are in an atom of carbon?

a)
12.01
b)
8
c)
6
d)
14
144.

How many neutrons are in an atom of carbon?

a)
12.01
b)
8
c)
6
d)
14
145.

How many protons are in a sodium atom, Na? (tap to enlarge the periodic table)

a)

Sodium has 1 proton.

b)

Sodium has 3 protons.

c)

Sodium has 11 protons

146.

How many neutrons are in a sodium atom, Na? (tap to enlarge the periodic table)

a)

11 neutrons

b)

12 neutrons

c)

23 neutrons

147.

How many neutrons are in an Argon atom, Na? (tap to enlarge the periodic table)

a)

18 neutrons

b)

22 neutrons

c)

40 neutrons

148.

What is the overall charge of an atom?

a)

Positive

b)

negative

c)

neutral

149.

The number of protons is always equal to the number of...

a)

Neutrons

b)

Electrons

c)

Neither

150.

To find the number of neutrons, you should subtract the Atomic Mass from the...

a)

Neutrons

b)

Electrons

c)

Atomic Number

d)

Either

151.

Which of the subatomic particles determine which atom an element is? Think the "boss."

a)

Neutrons

b)

Electrons

c)

Protons

d)

All

e)

None

152.

If the solute cannot permeate the membrane, what will happen here when diffusion occurs?

a)

The water will move the left side to the right side.

b)

The water will move from the right side to the left side.

c)

The red particles will move from the left side to the right side.

d)

The red particles will move from the right side to the left side.

153.

Assuming that water is the solvent in each of these beakers, which of these beakers has the highest concentration of pure water outside the salt block?

a)

left

b)

middle

c)

right

d)

they are all equal

154.

Assuming that water is the solvent in each of these beakers, which of these beakers has the lowest concentration of pure water outside the salt block?

a)

left

b)

middle

c)

right

155.

Assuming those are each cells with 10% salt, which one is least likely to have diffusion occur across the cell membrane?

a)

left

b)

middle

c)

right

156.

Assuming each of these beakers has a cell inside it that is 10% salt, which one is most likely to swell the most from osmosis?

a)

left

b)

middle

c)

right

157.

Assuming each of these beakers has a cell inside it that is 10% salt and the solvent in all cases is water, which one is most likely to shrink the most from osmosis?

a)

left

b)

middle

c)

right

158.

In which of these is the solute (green particle) most likely to diffuse out of the cell?

a)

A

b)

B

c)

C

159.

Which of these is the solute (green particle) most likely to diffuse into the cell?

a)

A

b)

B

c)

C

160.

Where is the higher concentration of CO2?

a)

Inside the cell

b)

Outside the cell

161.

Assuming the membrane is permeable to both pure substances modeled here, which of the following will happen in this scenario?

a)

The CO2 and O2 will diffuse out of the cell.

b)

The CO2 will diffuse out of the cell and O2 will diffuse into the cell.

c)

The CO2 will diffuse into the cell and O2 will diffuse out of the cell.

d)

The CO2 and O2 will diffuse into the cell.

162.

Is the solute able to permeate this membrane according to this diagram?

a)

yes

b)

no

163.

Interpret what happened in the beakers.

a)

The light blue solute diffused from an area of high concentration to an area of low concentration.

b)

The pink solvent diffused from an area of high concentration to an area of low concentration.

c)

Diffusion didn't occur.

164.

Osmosis is the diffusion of what pure substance?

a)

Water

b)

Carbon dioxide

c)

Glucose

d)

Oxygen

165.

How do particles move during diffusion and passive transport?

a)

from high to low concentrations

b)

from low to high concentrations

166.

This bag isn't permeable to the starch molecule but is permeable to the starch indicator molecule. Due to this, what can we predict the scientist will observe?

a)

The starch molecule will move out of the bag and the indicator will not diffuse.

b)

The starch indicator will diffuse into the bag and the starch molecule will not diffuse.

c)

The molecules will exchange places.

167.

Diffusion is the natural movement of molecules from:

a)

Areas of low concentration to areas of high concentration

b)

Areas of high concentration to areas of low concentration

c)

Cold to hot environments

d)

Gaseous to liquid environments

168.

Which of the following describes molecules moving down a concentration gradient?

a)

Sugar settling at the bottom of a water glass

b)

A cell with lots of water in it absorbing even more water

c)

A bottle of soda in which bubbles of carbon dioxide are evenly distributed

d)

Warm air moving from a radiator to fill up a room

169.

When do molecules stop moving or vibrating?

a)

When equilibrium is reached

b)

Never

c)

When the temperature is below 0 degrees Celsius

d)

When the substance they are part of becomes a solid

170.

From fastest to slowest rate of diffusion, which of the following is in the correct sequence?

a)

Solids, liquids, gases

b)

Liquids, gases, solids

c)

Gases, liquids, solids

d)

Gases, solids, liquids

171.

Why is diffusion so important in biology?

a)

It's the basic power source for most types of cells

b)

It allows substances to move across cell membranes

c)

It prevents toxins from entering our bodies

d)

Without diffusion, cell division could not take place

172.

What happens to the coffee particles when coffee is added to hot water?

a)

They sink to the bottom of the cup

b)

They spread out

c)

They clump together

d)

They freeze

173.

What does a 'region with high concentration' mean?

a)

An area with a SMALL number of particles

b)

An area with a LARGE number of particles

c)

An area with an UNEVEN number of particles

d)

An area with no particles

174.

An increase in temperature does what to diffusion?

a)

Speeds it up

b)

Slows it down

c)

Nothing

d)

Stops it all together

175.

An increase in temperature does what to diffusion?

a)

Speeds it up

b)

Slows it down

c)

Nothing

d)

Stops it all together

176.

Which gases move into and out of the blood at the lungs by diffusion

a)

Nitrogen and Oxygen

b)

Oxygen and Carbon Dioxide

c)

Nitrogen and Carbon Dioxide

d)

Argon and Nitrogen

177.

Where is there a low concentration of dye?

a)

at the bottom of cup

b)

in the color

c)

at the top of cup

d)

no concenteraion gradient

178.

Diffusion occurs only in solids

a)

True

b)

False

179.

How long does diffusion last?

a)

Until the concentration of particles in the system is equal

b)

Until a region in the system has a smaller concentration of particles than the other

c)

Until a region in the system has a greater concentration of particles than the other

d)

Until the particles disappear from the system

180.
All matter is made of _____ that are constanly moving.
a)
insulators
b)
particles
c)
convection
d)
pieces of plastic
181.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
182.

What causes diffusion?

a)

The constant, random motion of molecules

b)

Magnetic attraction between atoms

c)

The nuclear forces that hold atoms together

d)

The tendency of atoms to form chemical bonds with one another

183.

From fastest to slowest rate of diffusion, which of the following is in the correct sequence?

a)

Solids, liquids, gases

b)

Liquids, gases, solids

c)

Gases, liquids, solids

d)

Gases, solids, liquids

184.

Which of the following will diffuse the fastest?

a)

A tablespoon of sugar in a glass of water

b)

Heat through a solid piece of steel

c)

A pinch of salt in a glass of water

d)

The smell of bacon cooking throughout a room

185.

What happens to the coffee particles when coffee is added to hot water?

a)

They sink to the bottom of the cup

b)

They spread out

c)

They clump together

d)

They freeze

186.

Diffusion is the movement of particles from an area of _____ concentration to an area of ______ concentration

a)

High, Low

b)

Low, High

c)

Low, Low

d)

High, High

187.

An increase in temperature does what to diffusion?

a)

Speeds it up

b)

Slows it down

c)

Nothing

d)

Stops it all together

188.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
189.

Diffusion occurs only in solids

a)

True

b)

False

190.

How do the particles move in diffusion?

a)

From a region of low concentration to a region of high concentration

b)

From a region of high concentration to a region of low concentration

c)

From a region of low concentration to a region of low concentration

d)

From a region of high concentration to a region of high concentration

191.

Which diagram best shows the end result of diffusion?

a)

F

b)

G

c)

H

d)

J

192.

When does diffusion stop?

a)

After a day and a night

b)

When the particles are evenly spread out

c)

When there are no particles left

d)

When all the particles leave the system

193.

Diffusion is the natural movement of molecules from:

a)

Areas of low concentration to areas of high concentration

b)

Areas of high concentration to areas of low concentration

c)

Cold to hot environments

d)

Gaseous to liquid environments

194.

Which of the following describes molecules moving down a concentration gradient?

a)

Sugar settling at the bottom of a water glass

b)

A cell with lots of water in it absorbing even more water

c)

A bottle of soda in which bubbles of carbon dioxide are evenly distributed

d)

Warm air moving from a radiator to fill up a room

195.

Which of the following describes a state of equilibrium?

a)

A group of molecules that have stopped moving completely

b)

A room whose temperature is consistent throughout

c)

Carbon dioxide bubbles escaping from a soda bottle when it's opened

d)

A tree's roots absorbing nutrients from the soil

196.

When do molecules stop moving or vibrating?

a)

When equilibrium is reached

b)

Never

c)

When the temperature is below 0 degrees Celsius

d)

When the substance they are part of becomes a solid

197.

What causes diffusion?

a)

The constant, random motion of molecules

b)

Magnetic attraction between atoms

c)

The nuclear forces that hold atoms together

d)

The tendency of atoms to form chemical bonds with one another

198.

From fastest to slowest rate of diffusion, which of the following is in the correct sequence?

a)

Solids, liquids, gases

b)

Liquids, gases, solids

c)

Gases, liquids, solids

d)

Gases, solids, liquids

199.

Which of the following will diffuse the fastest?

a)

A tablespoon of sugar in a glass of water

b)

Heat through a solid piece of steel

c)

Heat through a solid piece of steel

d)

The smell of bacon cooking throughout a room

200.

Why is diffusion so important in biology?

a)

It's the basic power source for most types of cells

b)

It allows substances to move across cell membranes

c)

It prevents toxins from entering our bodies

d)

Without diffusion, cell division could not take place

201.

What do the sun and a lightbulb have in common?

a)

They both generate electricity

b)

They both emit thermal radiation

c)

Their molecules are both in a state of equilibrium

d)

They both absorb thermal energy

202.

What causes an electric current to move through a wire?

a)

Electrons diffusing from the charged part of the wire to the uncharged part

b)

Positrons diffusing from the hot part of the wire to the cooler part

c)

Protons diffusing from the power source to the load

d)

Neutrons diffusing up a concentration gradie

203.

How confident are you about your knowledge of diffusion after the lesson?

a)

I can explain it with examples AND say what impacts the rate of it!

b)

I can explain it with examples!

c)

I can define it and describe examples!

d)

I can define it!

204.

What is the definition of diffusion?

a)

The movement of particles from an area of low concentration to an area of high concentration.

b)

The movement of particles from an area of high concentration to an area of low concentration.

205.

In which direction does diffusion occur, from high to low concentrations or from low to high concentrations?

a)

from low to high concentrations

b)

from high to low concentrations

c)

in both directions simultaneously

d)

it does not occur

206.

What impact does temperature have on the rate of diffusion?

a)

Temperature has no impact on the rate of diffusion.

b)

Temperature decreases the rate of diffusion.

c)

Temperature increases the rate of diffusion.

207.

George, Isabelle, and Matilda are making a cup of tea. They noticed that the tea flavor they added in one corner of the cup quickly spread throughout the cup. Is this an example of diffusion, the movement of particles from low to high concentrations?

a)

True

b)

False

208.

Imagine you are in a room where someone has just sprayed a perfume. How does the concentration gradient play a role in the spreading of the perfume's scent?

a)

It drives the movement of perfume molecules from the area of high concentration (near the spray) to areas of low concentration (other parts of the room)

b)

It causes the perfume molecules to move from areas of low concentration (other parts of the room) to the area of high concentration (near the spray)

c)

It has no role in the spreading of the perfume's scent

d)

It only affects the movement of water molecules in the air

209.

What are the factors that can affect the rate of diffusion in a liquid?

a)

Pressure of the surrounding environment

b)

Time of day

c)

Temperature, concentration gradient, molecular size, and medium viscosity

d)

Color of the liquid

210.

Explain how diffusion is essential for the survival of living organisms.

a)

Diffusion is not essential for the survival of living organisms

b)

Diffusion is essential for the survival of living organisms because it allows for the exchange of gases and nutrients at the cellular level.

211.

What happens to the rate of diffusion when the concentration gradient increases?

a)

The rate of diffusion decreases.

b)

The rate of diffusion increases.

c)

The rate of diffusion remains the same.

212.

How confident were you about your knowledge of diffusion before the lesson?

a)

I could give examples, explain it scientifically AND explain what impacts it!

b)

I could explain it with examples!

c)

I could define it and give examples!

d)

Never heard of it!

213.

When organisms digest food they release?

a)

Energy

b)

Oxygen

c)

Vomit

214.

Organisms they they digest food they release energy from ________ molecules

a)

water

b)

food

c)

air

215.

(a)   is the process of releasing food molecules.

216.

One kind of food molecule is called?

a)

Gluten

b)

Protein

c)

Glucose

217.

____ is the movement of molecules from higher concentration to lower concentration.

a)

Diffusion

b)

Respiration

c)

Excrete

218.

Animals that can live on land and water are called (a)   .

219.

For diffusion to work animals must have ____ skin.

a)

Dry

b)

Dirty

c)

Moist

220.

Amphibians live on land when they are young.

a)

True

b)

False

221.

Humans breathe from their ____ and ___.

a)

ears , tongue

b)

mouth , nose

c)

leg, head

222.

Is the animal Vertebrate or invertebrate?

a)

Vertebrate

b)

Invertebrate

223.

Is the snake a vertebrate or invertebrate?

a)

Vertebrate

b)

Invertebrate

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